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Ubuntu Security Notice USN-1424-1

Ubuntu Security Notice USN-1424-1
Posted Apr 20, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1424-1 - It was discovered that OpenSSL could be made to dereference a NULL pointer when processing S/MIME messages. A remote attacker could use this to cause a denial of service. These issues did not affect Ubuntu 8.04 LTS. Tavis Ormandy discovered that OpenSSL did not properly perform bounds checking when processing DER data via BIO or FILE functions. A remote attacker could trigger this flaw in services that used SSL to cause a denial of service or possibly execute arbitrary code with application privileges. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2012-2110, CVE-2006-7250, CVE-2012-1165, CVE-2012-2110
SHA-256 | 16cd6f0c4fab137dff803ac2d2cfb01f273de4e132798b3f8032fb92d895a98c

Ubuntu Security Notice USN-1424-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1424-1
April 19, 2012

openssl vulnerabilities
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

An application using OpenSSL could be made to crash or run programs if it
opened a specially crafted file.

Software Description:
- openssl: Secure Socket Layer (SSL) cryptographic library and tools

Details:

It was discovered that OpenSSL could be made to dereference a NULL pointer
when processing S/MIME messages. A remote attacker could use this to cause
a denial of service. These issues did not affect Ubuntu 8.04 LTS.
(CVE-2006-7250, CVE-2012-1165)

Tavis Ormandy discovered that OpenSSL did not properly perform bounds
checking when processing DER data via BIO or FILE functions. A remote
attacker could trigger this flaw in services that used SSL to cause a
denial of service or possibly execute arbitrary code with application
privileges. (CVE-2012-2110)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.10:
libssl1.0.0 1.0.0e-2ubuntu4.4

Ubuntu 11.04:
libssl0.9.8 0.9.8o-5ubuntu1.4

Ubuntu 10.04 LTS:
libssl0.9.8 0.9.8k-7ubuntu8.10

Ubuntu 8.04 LTS:
libssl0.9.8 0.9.8g-4ubuntu3.17

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1424-1
CVE-2006-7250, CVE-2012-1165, CVE-2012-2110

Package Information:
https://launchpad.net/ubuntu/+source/openssl/1.0.0e-2ubuntu4.4
https://launchpad.net/ubuntu/+source/openssl/0.9.8o-5ubuntu1.4
https://launchpad.net/ubuntu/+source/openssl/0.9.8k-7ubuntu8.10
https://launchpad.net/ubuntu/+source/openssl/0.9.8g-4ubuntu3.17
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